javascript for maillist form doesn't send any data and field validation doesn't work.

I downloaded this free javascript code to create a form and thne send the data as an email msg. When I send the email none of the form fields get sent. None of the field validation works either. Does anyone have any ideas how to make the script work. I posted a message on that forum and got no answer.
<!-- TWO STEPS TO INSTALL MAILING LIST:

1. Paste the coding into the HEAD of your HTML document
2. Put the last code into the BODY of your HTML document -->